How many grams of H2 are required to convert 500.0 grams of C6Br to C6H6. And how many grams of C6H6 can be produced?

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?